Compressor phase sequence detection method and device and start-up control method and device thereof
A phase sequence detection, compressor technology, applied in lighting and heating equipment, phase sequence/synchronization indication, refrigerators, etc., can solve problems such as noise, inability to produce compression effects, damage to compressors, etc., to achieve good operating conditions, improve Higher cost, effect of improving fault tolerance/redundancy
Active Publication Date: 2021-04-27
DANFOSS (TIANJIN) CO LTD
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Problems solved by technology
Rotating in the opposite direction of design rotation not only fails to produce the relevant compression effect, but often results in noise
Moreover, long-term reverse operation will damage the compressor
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[0089] In order to make the above objects, features and advantages of the present disclosure more apparent, the technical content of exemplary preferred embodiments of the present disclosure illustrated or further expanded according to the accompanying drawings will be described in detail below in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components.
[0090] The phase sequence detection of the compressor is especially important for the performance of the compressor, especially in variable speed compressors, especially variable speed scroll compressors. The scroll compressor is widely used in the fields of refrigeration, air conditioning and heat pump because of its high efficiency, small size, light weight and stable operation. Based on this, the present invention will focus on a variable speed scroll compressor as an example to illustrate the technical solution of phase sequence dete...
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The invention relates to a phase sequence detection method of a compressor driven by a motor. The phase sequence detection method includes the following steps: during the startup of the compressor, the current of the motor and the compression The rotation speed of the compressor is sampled in real time; and the ratio of the rotation speed to the current is compared with a preset threshold, and the phase sequence of the compressor is determined according to the comparison result. The present invention also relates to a phase-sequence detection device of a scroll compressor, a start-up control method and equipment thereof; and a compressor including the phase-sequence detection device, a phase-sequence detection method and device of a compressor, and start-up control of a compressor equipment. Determining compressor phasing by monitoring the ratio of compressor speed to current for variable speed compressors during start-up allows timely detection of wiring and phasing errors.
Description
technical field [0001] The invention relates to the technical field of air conditioning, refrigeration or heat pump, in particular to a scroll compressor phase sequence detection method and device for variable speed compressors, and a startup control method and equipment thereof. Background technique [0002] A compressor is one of the main components in a refrigeration air conditioning or heat pump system. Compressors include scroll compressors, rotary compressors, screw compressors, centrifugal compressors, and reciprocating compressors, among others. Among them, many compressors are required to rotate in the designed direction of rotation. Rotating in the opposite direction of design rotation not only fails to produce the relevant compression effect, but often results in noise. Moreover, long-term reverse operation will damage the compressor. Therefore, reverse rotation of the compressor should be avoided as much as possible. [0003] In view of this, there is a need ...
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IPC IPC(8): G01R29/18F25B49/02
CPCF25B49/022G01R29/18
Inventor 王东东李靖远孙英科
Owner DANFOSS (TIANJIN) CO LTD